A flat, uniform board, which has mass 3.60kg and a length 0.50m, is held in a...
A flat, uniform board, which has mass 3.60kg and a length 0.50m, is held in a horizontal orientation by two vertical ropes. One rope is attached at the left end of the board and the other rope is attached at a point (3/4)L from the left end of the board. What force does the rope on the right exert of the board?
Homework Answers
Let the tensions be TL and TR
TL + TR = 3.6*g = 3.6*9.8 ( force balance)
Torque balance
TL*L/2 = TR(L/4)
2TL = TR
From the two equtions we get
3TR/2 = 3.6*9.8 = 23.52N
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